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Multithreaded consumer for multipartition topics

The previous example is a very basic example of a consumer who consumes messages from a single broker with no explicit partitioning of messages within the topic. Let's jump to the next level and write another program, which consumes messages from multiple partitions connecting to single/multiple topics.

A multithreaded high-level consumer-API-based design is usually based on the number of partitions in the topic and follows a one-to-one mapping approach between the thread and the partitions within the topic. For example, if four partitions are defined for any topic, as a best practice, only four threads should be initiated with the consumer application to read the data; otherwise some conflicting ...

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